Moistureproof and dehumidifying mining explosion-proof transformer

Abstract

The invention provides a moisture-proof and dehumidification mining explosion-proof transformer, and relates to the technical field of explosion-proof transformers. The damp-proof and dehumidification mining explosion-proof transformer comprises a controller, a temperature sensor, a transformer body and an explosion-proof shell located on the outer wall of the transformer body. A double-circulation dehumidification system is constructed through the first dehumidification box and the second dehumidification box, and the problem that humidity is out of control due to saturation failure of a traditional static drying agent is solved. The two dehumidification boxes alternately execute a moisture absorption mode and a regeneration mode and are activated and regenerated through an anti-explosion PTC heating pipe, when the sealing performance of the shell is reduced or the external humidity suddenly changes, the internal humidity gradient is adjusted in real time, and the situation that the insulation performance is accelerated to be degraded due to long-term humidity is avoided; during maintenance, only the maintenance door needs to be opened, the old dehumidification box is pulled out along the sliding rail and replaced, the manual operation intensity in the underground narrow space is remarkably reduced, and meanwhile the situation that due to frequent disassembly and assembly, the air tightness of the anti-explosion shell is reduced is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of explosion-proof transformers, in particular to a moisture-proof and dehumidifying mine explosion-proof transformer. BACKGROUND

[0002] The position where the mine transformer is placed is mostly humid, and the humid environment has a great influence on the current, which may cause great harm. In order to prevent accidents caused by this phenomenon, the transformer needs to have the function of moisture-proof and dehumidification. For this purpose, a moisture-proof and dehumidifying mine explosion-proof transformer is disclosed, which comprises a shell, a transformer body fixedly arranged in the shell, a support assembly fixedly arranged at the bottom end of the shell, the support assembly comprising a support plate, a support seat, a support foot and a hand lifting frame, the top end of the support plate being fixedly arranged at the bottom end of the shell, the bottom end of the support plate being fixedly provided with a support seat, the bottom end of the support seat being fixedly provided with two support feet, and the inside of the support seat being fixedly provided with a hand lifting frame. According to the disclosure, the support assembly is arranged to prevent the shell from touching the ground and to prevent the moisture on the ground from entering the transformer body. At the same time, the support assembly also prevents accidental water flow on the ground from wetting the transformer body. Most transformers are heavy, and the hand lifting frame arranged in the support seat can easily lift the transformer when it needs to be moved. When air needs to be drawn, the two air exhaust fans are controlled to work through the air exhaust fan switches on the two switch panels. The first filter screen forms an isolation between the inside of the shell and the outside, and the second filter screen can be placed with moisture-proof and dehumidifying articles such as desiccant. When it is necessary to take or place, the baffle is taken up by pulling out the support post, and when the taking or placing is completed, the baffle is stably placed by clamping the support post in the groove of the limiting frame. The baffle can prevent water or sundries from falling into the shell;

[0003] However, the above-mentioned disclosure still has significant disadvantages. The disclosure relies on physical isolation (support assembly + filter screen) and static desiccant adsorption, and cannot actively eliminate the moisture that has penetrated into the inside of the shell. When the external humidity changes suddenly or the sealing performance of the equipment decreases, the static desiccant is easy to saturate and fail, resulting in that the transformer is in a humid risk for a long time. Especially when the mine transformer is in high load operation, the internal temperature rise will aggravate the risk of condensation. However, the disclosure lacks a humidity and temperature linkage control mechanism.

[0004] Therefore, it is necessary to further improve and optimize the structure of the mine explosion-proof transformer to improve the moisture-proof and dehumidifying function. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a moisture-proof and dehumidifying mine explosion-proof transformer, which solves the problem of poor dehumidifying effect of the moisture-proof and dehumidifying mine explosion-proof transformer in the prior art.

[0006] In order to achieve the above object, the present application is realized by the following technical scheme: A moisture-proof and dehumidifying mining explosion-proof transformer, comprising a controller, a temperature sensor, a transformer body and an explosion-proof shell located on the outer wall of the transformer body, the explosion-proof shell is fixedly connected with a first dehumidifying box and a second dehumidifying box on the left and right sides respectively, the upper wall of the first dehumidifying box is connected with a first three-way joint through a first pipeline, the left and right ends of the first three-way joint are fixedly connected with a seventh pipeline and an eighth pipeline respectively, one end of the eighth pipeline away from the first three-way joint penetrates through the upper wall of the explosion-proof shell and is communicated with the inside of the explosion-proof shell, the lower wall of the first dehumidifying box is fixedly connected with a third pipeline and a second pipeline from left to right in sequence, one end of the second pipeline away from the first dehumidifying box penetrates through the left wall of the explosion-proof shell and is communicated with the inside of the explosion-proof shell, the upper wall of the second dehumidifying box is fixedly connected with a second three-way joint through a fourth pipeline, the left and right ends of the second three-way joint are fixedly connected with a ninth pipeline and a tenth pipeline respectively, one end of the ninth pipeline away from the second three-way joint penetrates through the upper wall of the explosion-proof shell and is communicated with the inside of the explosion-proof shell, the lower wall of the second dehumidifying box is fixedly connected with a fifth pipeline and a sixth pipeline from left to right in sequence, one end of the fifth pipeline away from the second dehumidifying box penetrates through the right wall of the explosion-proof shell and is communicated with the inside of the explosion-proof shell, the lower wall of the explosion-proof shell is fixedly connected with a moisture-proof pad and a bottom plate from top to bottom in sequence.

[0007] Preferably, the outer walls of the first pipeline, the third pipeline, the fourth pipeline and the sixth pipeline are provided with humidity detection structures for detecting the humidity of the air in the pipeline, the outer walls of the third pipeline, the second pipeline, the fifth pipeline, the sixth pipeline, the seventh pipeline, the eighth pipeline, the ninth pipeline and the tenth pipeline are provided with valve structures for controlling the on-off of the pipeline, the interiors of the first dehumidifying box and the second dehumidifying box are provided with humidity absorbing structures for absorbing humidity, the interiors of the first dehumidifying box and the second dehumidifying box and above the humidity absorbing structures are provided with heating structures for helping the regeneration of the humidity absorbing structure, and the interiors of the first dehumidifying box and the second dehumidifying box and below the humidity absorbing structures are provided with air supply structures.

[0008] Preferably, the humidity detection structure comprises four groups of humidity sensors, and the four groups of humidity sensors are arranged on the outer walls of the first pipeline, the third pipeline, the fourth pipeline and the sixth pipeline respectively.

[0009] Preferably, the valve structure comprises eight groups of explosion-proof pipeline valves, and the eight groups of explosion-proof pipeline valves are arranged on the outer walls of the third pipeline, the second pipeline, the fifth pipeline, the sixth pipeline, the seventh pipeline, the eighth pipeline, the ninth pipeline and the tenth pipeline respectively.

[0010] Preferably, the moisture absorption structure comprises a plurality of groups of dehumidification boxes, the plurality of groups of dehumidification boxes are arranged in the first dehumidification box and the second dehumidification box respectively, the first dehumidification box and the second dehumidification box are internally provided with fixing frames, the dehumidification boxes are in sliding connection with the inner side walls of the fixing frames, the dehumidification boxes are internally provided with storage cavities, the upper opening part and the lower opening part of the storage cavities are provided with fixed nets, a plurality of groups of moisture absorption particles are filled in the storage cavities and between the two groups of fixed nets, and the moisture absorption particles are heat-regeneratable moisture absorption silica gel particles.

[0011] Preferably, the heating structure comprises two heating devices, the two heating devices are arranged in the first dehumidification box and the second dehumidification box respectively, the heating devices are composed of a plurality of groups of explosion-proof PTC heating pipes, and the plurality of groups of explosion-proof PTC heating pipes are distributed in multiple rows and multiple columns.

[0012] Preferably, the air supply structure comprises two groups of explosion-proof fans, the two groups of explosion-proof fans are fixedly connected in the first dehumidification box and the second dehumidification box respectively, and the two groups of explosion-proof fans are both bidirectional axial flow fans.

[0013] Preferably, the inner side lower walls of the first dehumidification box and the second dehumidification box are fixedly connected with water collecting covers, the water collecting covers are in inverted conical shape with a large upper opening and a small lower opening, one end of the third pipeline towards the lower wall of the first dehumidification box penetrates through the lower wall of the first dehumidification box and is connected with the lower opening part of the water collecting cover in the first dehumidification box, and one end of the sixth pipeline towards the lower wall of the second dehumidification box penetrates through the lower wall of the second dehumidification box and is connected with the lower opening part of the water collecting cover in the second dehumidification box.

[0014] Preferably, one end of the second pipeline towards the lower wall of the first dehumidification box penetrates through the lower wall of the first dehumidification box, the inner wall of the water collecting cover and extends to above the water collecting cover in sequence, one end of the fifth pipeline towards the lower wall of the second dehumidification box penetrates through the lower wall of the second dehumidification box, the inner wall of the water collecting cover and extends to above the water collecting cover in sequence, the outer walls of the one end of the second pipeline extending into the first dehumidification box and the one end of the fifth pipeline extending into the second dehumidification box are both provided with ventilation openings, the one end of the second pipeline extending into the first dehumidification box and the one end of the fifth pipeline extending into the second dehumidification box are fixedly connected with waterproof caps for preventing water from entering, the waterproof caps are in a structure with a closed upper end and an open lower end, and the outer diameters of the second pipeline and the fifth pipeline are smaller than the inner diameter of the waterproof cap.

[0015] Preferably, one side of the first dehumidification box and the second dehumidification box away from each other is respectively provided with a group of maintenance doors, and the first dehumidification box and the second dehumidification box are both maintained by opening the maintenance doors.

[0016] The application provides a moisture-proof dehumidification mine explosion-proof transformer.

[0017] 1、Compared with the prior art, the moisture-proof and dehumidifying mine explosion-proof transformer, through the first dehumidifying box and the second dehumidifying box, builds a double-circulation dehumidifying system, combines the explosion-proof fan, the explosion-proof pipeline valve control first to sixth pipeline on-off and the intelligent feedback mechanism of the humidity sensor, solves the humidity out-of-control problem caused by the saturation failure of the traditional static desiccant. The two dehumidifying boxes alternately execute the humidity absorption and regeneration mode, activate the regeneration through the explosion-proof PTC heating pipe, when the shell sealing property decreases or the external humidity suddenly changes, the internal humidity gradient is adjusted in real time, the condensation risk caused by the temperature rise of the transformer under high load operation is inhibited, and the insulation performance is prevented from accelerating degradation due to long-term moisture.

[0018] 2、Compared with the prior art, the moisture-proof and dehumidifying mine explosion-proof transformer adopts a modular dehumidifying box design, through the cooperation of the fixed frame sliding connection and the maintenance door, the humidity absorbing particles are quickly replaced. When maintaining, only the maintenance door needs to be opened, the old dehumidifying box is extracted along the slide rail and replaced, without disassembling the explosion-proof shell or damaging the pipeline sealing structure, the artificial operation strength in the narrow space underground is significantly reduced, and the decrease of the air tightness of the explosion-proof shell due to frequent disassembly and assembly is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the application;

[0020] Figure 2 It is a first dehumidifying box internal structure sectional view of the application;

[0021] Figure 3 It is a second dehumidifying box internal structure sectional view of the application;

[0022] Figure 4 It is a dehumidifying box and fixed frame connection structure side partial sectional view of the application;

[0023] Figure 5 It is a second pipeline and waterproof cap connection structure partial sectional view of the application;

[0024] Figure 6 It is a water collecting cover structure schematic view of the application.

[0025] Among them, 1, explosion-proof shell; 2, first dehumidifying box; 3, second dehumidifying box; 4, maintenance door; 5, first pipeline; 6, second pipeline; 7, third pipeline; 8, fourth pipeline; 9, fifth pipeline; 10, sixth pipeline; 11, explosion-proof pipeline valve; 12, waterproof cap; 13, air vent; 14, water collecting cover; 15, explosion-proof PTC heating pipe; 16, fixed frame; 17, dehumidifying box; 18, fixed net; 19, humidity absorbing particles; 20, moisture-proof pad; 21, bottom plate; 22, explosion-proof fan; 23, first three-way joint; 24, seventh pipeline; 25, eighth pipeline; 26, second three-way joint; 27, ninth pipeline; 28, tenth pipeline; 29, humidity sensor. DETAILED DESCRIPTION

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example:

[0028] like Figures 1 to 6 As shown, this embodiment of the invention provides a moisture-proof and dehumidifying explosion-proof transformer for mining, including a controller, a temperature sensor, a transformer body, and an explosion-proof housing 1 located on the outer wall of the transformer body. A first dehumidification box 2 and a second dehumidification box 3 are fixedly connected to the left and right sides of the explosion-proof housing 1, respectively. A first tee connector 23 is connected to the upper wall of the first dehumidification box 2 via a first pipe 5. A seventh pipe 24 and an eighth pipe 25 are fixedly connected to the left and right ends of the first tee connector 23, respectively. The end of the eighth pipe 25 away from the first tee connector 23 penetrates the upper wall of the explosion-proof housing 1 and communicates with the interior of the explosion-proof housing 1. A third pipe 7 is fixedly connected from left to right to the lower wall of the first dehumidification box 2. The second pipe 6, with its end away from the first dehumidification box 2, penetrates the left wall of the explosion-proof housing 1 and communicates with the interior of the explosion-proof housing 1. The upper wall of the second dehumidification box 3 is fixedly connected to the second tee connector 26 via the fourth pipe 8. The left and right ends of the second tee connector 26 are respectively fixedly connected to the ninth pipe 27 and the tenth pipe 28. The end of the ninth pipe 27 away from the second tee connector 26 penetrates the upper wall of the explosion-proof housing 1 and communicates with the interior of the explosion-proof housing 1. The lower wall of the second dehumidification box 3 is fixedly connected to the fifth pipe 9 and the sixth pipe 10 from left to right. The end of the fifth pipe 9 away from the second dehumidification box 3 penetrates the right wall of the explosion-proof housing 1 and communicates with the interior of the explosion-proof housing 1.

[0029] When the humidity inside the explosion-proof housing 1 exceeds the standard due to decreased sealing or high-load temperature rise, the controller can switch the moisture absorption / regeneration mode of the first dehumidification box 2 and the second dehumidification box 3. After the moisture-absorbing particles 19 are saturated, regeneration is triggered. Combined with the linkage control of the explosion-proof pipeline valve 11 on and off the pipeline, continuous dehumidification and desiccant circulation regeneration are achieved, avoiding humidity runaway caused by static adsorption failure.

[0030] The explosion-proof housing 1 has a moisture-proof pad 20 and a base plate 21 fixedly connected from top to bottom on its lower wall.

[0031] To achieve intelligent feedback and precise control of temperature and humidity, humidity detection structures for detecting the humidity of the air inside the pipes are installed on the outer walls of the first pipe 5, the third pipe 7, the fourth pipe 8, and the sixth pipe 10. The humidity detection structures include four sets of humidity sensors 29, which are respectively installed on the outer walls of the first pipe 5, the third pipe 7, the fourth pipe 8, and the sixth pipe 10. Valve structures for controlling the opening and closing of the pipes are installed on the outer walls of the third pipe 7, the second pipe 6, the fifth pipe 9, the sixth pipe 10, the seventh pipe 24, the eighth pipe 25, the ninth pipe 27, and the tenth pipe 28. The valve structures include eight sets of explosion-proof pipe valves 11, which are respectively installed on the outer walls of the third pipe 7, the second pipe 6, the fifth pipe 9, the sixth pipe 10, the seventh pipe 24, the eighth pipe 25, the ninth pipe 27, and the tenth pipe 28.

[0032] When the humidity sensor 29 detects a decrease in the moisture absorption efficiency of a dehumidifier, the controller immediately closes the explosion-proof pipe valve 11 on the corresponding pipe, switches to regeneration mode, and simultaneously starts the explosion-proof PTC heating tube 15 to heat and regenerate the saturated moisture-absorbing particles 19. The explosion-proof fan 22 reverses the airflow to accelerate the regeneration airflow, ensuring the humidity regulation response speed and the ability to suppress condensation under high load conditions.

[0033] To improve the dynamic circulation capability of moisture absorption and dehumidification, both the first dehumidification box 2 and the second dehumidification box 3 are equipped with moisture-absorbing structures for adsorbing moisture. The moisture-absorbing structure includes multiple sets of dehumidification boxes 17, which are respectively installed inside the first dehumidification box 2 and the second dehumidification box 3. Both the first dehumidification box 2 and the second dehumidification box 3 are equipped with a fixing frame 16. The dehumidification box 17 is slidably connected to the inner side wall of the fixing frame 16. The dehumidification box 17 is equipped with a storage cavity. The upper and lower openings of the storage cavity are equipped with fixing nets 18. The storage cavity is filled with multiple sets of moisture-absorbing particles 19, which are heat-regenerable moisture-absorbing silica gel particles.

[0034] When the humid airflow enters the dehumidification box, the moisture-absorbing particles 19 absorb moisture through the uniform pores of the fixing mesh 18. Multiple sets of dehumidification boxes 17 are arranged in layers within the fixing frame 16, which increases the contact time between the airflow and the moisture-absorbing particles 19, significantly improving the moisture absorption efficiency.

[0035] To improve the regeneration efficiency and energy consumption ratio of the moisture-absorbing particles 19, a heating structure is provided inside the first dehumidification box 2 and the second dehumidification box 3 and above the moisture-absorbing structure to help regenerate the moisture-absorbing structure. The heating structure includes two heating devices, which are respectively installed inside the first dehumidification box 2 and the second dehumidification box 3. The heating devices consist of multiple sets of explosion-proof PTC heating tubes 15, which are distributed in multiple rows and columns. Each row of explosion-proof PTC heating tubes 15 is staggered with the adjacent row of explosion-proof PTC heating tubes 15.

[0036] When the regeneration mode is started, the staggered distribution of the explosion-proof PTC heating pipe 15 makes the hot air uniformly penetrate the layer of moisture-absorbing particles 19 in the dehumidification box 17. The bidirectional explosion-proof fan 22 switches the positive and negative rotation according to the air flow direction to blow air in the positive direction when absorbing moisture and to draw air in the reverse direction when regenerating, in combination with the limiting effect of the fixed net 18 on the moisture-absorbing particles 19, to avoid the waste of regeneration energy consumption caused by the scattering of particles or uneven heating.

[0037] The first dehumidification box 2 and the second dehumidification box 3 are provided with air supply structures inside and below the moisture-absorbing structure. The air supply structure includes two groups of explosion-proof fans 22, which are fixedly connected inside the first dehumidification box 2 and the second dehumidification box 3, respectively. Both groups of explosion-proof fans 22 are bidirectional axial flow fans.

[0038] In order to facilitate the removal of the condensed water generated during regeneration, the inner lower wall of the first dehumidification box 2 and the inner lower wall of the second dehumidification box 3 are fixedly connected with a water collecting cover 14. The water collecting cover 14 is in the shape of an inverted cone with a large upper opening and a small lower opening. One end of the third pipeline 7 towards the lower wall of the first dehumidification box 2 penetrates the lower wall of the first dehumidification box 2 and is connected with the lower opening part of the water collecting cover 14 in the first dehumidification box 2. One end of the sixth pipeline 10 towards the lower wall of the second dehumidification box 3 penetrates the lower wall of the second dehumidification box 3 and is connected with the lower opening part of the water collecting cover 14 in the second dehumidification box 3.

[0039] When the moisture-absorbing particles 19 are regenerated, the condensed water converges along the taper surface of the water collecting cover 14 and is then discharged to a place away from the explosion-proof shell 1 through the third pipeline 7 or the sixth pipeline 10. The waterproof cap 12 prevents high-humidity air from entering the second pipeline 6 or the fifth pipeline 9 during regeneration.

[0040] In order to prevent moisture from entering the inside of the second pipeline 6 and the fifth pipeline 9 during regeneration, one end of the second pipeline 6 towards the lower wall of the first dehumidification box 2 penetrates the lower wall of the first dehumidification box 2, the inner wall of the water collecting cover 14 and extends above the water collecting cover 14 in sequence. One end of the fifth pipeline 9 towards the lower wall of the second dehumidification box 3 penetrates the lower wall of the second dehumidification box 3, the inner wall of the water collecting cover 14 and extends above the water collecting cover 14 in sequence. The outer wall of the end of the second pipeline 6 extending into the first dehumidification box 2 and the outer wall of the end of the fifth pipeline 9 extending into the second dehumidification box 3 are both provided with air vents 13. The end of the second pipeline 6 extending into the first dehumidification box 2 and the end of the fifth pipeline 9 extending into the second dehumidification box 3 are both fixedly connected with a waterproof cap 12 for preventing water from entering. The waterproof cap 12 is in the shape of a closed upper end and an open lower end. The outer diameter of the second pipeline 6 and the outer diameter of the fifth pipeline 9 are both smaller than the inner diameter of the waterproof cap 12.

[0041] The outer diameter of the second pipeline 6 and the outer diameter of the fifth pipeline 9 are smaller than the inner diameter of the waterproof cap 12 to form an anti-backflow air gap. In the regeneration mode, high-humidity air blown out of the dehumidification box 17 is prevented from entering.

[0042] In order to reduce the difficulty of maintenance and maintain the sealing of the explosion-proof shell 1, a group of maintenance doors 4 are arranged on the opposite side of the first dehumidifying box 2 and the second dehumidifying box 3, respectively, and the first dehumidifying box 2 and the second dehumidifying box 3 are maintained by opening the maintenance door 4.

[0043] When the moisture-absorbing particles 19 need to be replaced, the operator does not need to disassemble the explosion-proof shell 1 or damage the pipeline connection, and directly replaces the dehumidifying box 17 by opening the maintenance door 4, thereby avoiding the decrease in air tightness at the joint between the moisture-proof pad 20 and the bottom plate 21 due to frequent disassembly and assembly.

[0044] Working principle: when the humidity in the explosion-proof shell 1 exceeds the standard due to the decrease in sealing or high-load temperature rise, the controller can switch the moisture-absorbing / regeneration mode of the first dehumidifying box 2 and the second dehumidifying box 3, the moisture-absorbing particles 19 are saturated and triggered to regenerate, and the explosion-proof pipeline valve 11 is linked to control the pipeline on-off, thereby realizing continuous dehumidification and desiccant cyclic regeneration, avoiding humidity out of control caused by static adsorption failure; when the humidity sensor 29 detects that the dehumidifying efficiency of a dehumidifying box decreases, the controller immediately closes the explosion-proof pipeline valve 11 on the corresponding pipeline, switches to the regeneration mode, and starts the explosion-proof PTC heating pipe 15 to heat and regenerate the saturated moisture-absorbing particles 19, and the explosion-proof fan 22 reversely blows air to accelerate the regeneration airflow, thereby ensuring the humidity adjustment response speed and the condensation inhibition ability under high-load working conditions; when the humid airflow enters the dehumidifying box, the moisture-absorbing particles 19 absorb water through the uniform pores of the fixed net 18, a plurality of dehumidifying boxes 17 are arranged in layers in the fixed frame 16, the airflow is increased to contact the moisture-absorbing particles 19, and the dehumidifying efficiency is significantly improved; when the regeneration mode is started, the staggered distribution of the explosion-proof PTC heating pipe 15 makes the hot air uniformly penetrate the layer of moisture-absorbing particles 19 in the dehumidifying box 17, the bidirectional explosion-proof fan 22 switches the forward and reverse rotation according to the airflow direction, blows air forward when absorbing moisture, and blows air backward when regenerating, and in combination with the limiting effect of the fixed net 18 on the moisture-absorbing particles 19, the regeneration energy waste caused by particle scattering or uneven heating is avoided; the air supply structure is arranged inside the first dehumidifying box 2 and the second dehumidifying box 3 and below the moisture-absorbing structure, the air supply structure includes two groups of explosion-proof fans 22, the two groups of explosion-proof fans 22 are fixedly connected inside the first dehumidifying box 2 and the second dehumidifying box 3, respectively, and the two groups of explosion-proof fans 22 are both bidirectional axial flow fans; when the moisture-absorbing particles 19 are regenerated, the condensed water is collected along the cone surface of the water collecting cover 14 and then discharged to a place away from the explosion-proof shell 1 through the third pipeline 7 or the sixth pipeline 10, and the waterproof cap 12 prevents high-humidity air from entering the second pipeline 6 or the fifth pipeline 9 during regeneration; the outer diameter of the second pipeline 6 and the outer diameter of the fifth pipeline 9 are smaller than the inner diameter of the waterproof cap 12 to form an anti-backflow air gap, and in the regeneration mode, the high-humidity air blown out of the dehumidifying box 17 is avoided from entering; when the moisture-absorbing particles 19 need to be replaced, the operator does not need to disassemble the explosion-proof shell 1 or damage the pipeline connection, and directly replaces the dehumidifying box 17 by opening the maintenance door 4, thereby avoiding the decrease in air tightness at the joint between the moisture-proof pad 20 and the bottom plate 21 due to frequent disassembly and assembly.

[0045] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be made without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. A moisture-proof and dehumidifying mine explosion-proof transformer, characterized in that: The utility model relates to a transformer drying device, including controller, temperature sensor, transformer body and the explosion -proof shell (1) of the transformer body outer wall, the explosion -proof shell (1) left and right sides are fixedly connected with first dehumidification box (2) and second dehumidification box (3) respectively, first dehumidification box (2) upper wall is connected with first three -way joint (23) through first pipeline (5), first three -way joint (23) left and right ends are fixedly connected with seventh pipeline (24) and eighth pipeline (25) respectively, eighth pipeline (25) is away from one end of first three -way joint (23) and penetrates the upper wall of explosion -proof shell (1) and is passed through with the inside of explosion -proof shell (1), first dehumidification box (2) lower wall is fixedly connected with third pipeline (7) and second pipeline (6) from left to right in proper order, second pipeline (6) is away from one end of first dehumidification box (2) and penetrates the left wall of explosion -proof shell (1) and is passed through with the inside of explosion -proof shell (1), second dehumidification box (3) upper wall is fixedly connected with second three -way joint (26) through fourth pipeline (8), second three -way joint (26) left and right ends are fixedly connected with ninth pipeline (27) and tenth pipeline (28) respectively, ninth pipeline (27) is away from one end of second three -way joint (26) and penetrates the upper wall of explosion -proof shell (1) and is passed through with the inside of explosion -proof shell (1), second dehumidification box (3) lower wall is fixedly connected with fifth pipeline (9) and sixth pipeline (10) from left to right in proper order, fifth pipeline (9) is away from one end of second dehumidification box (3) and penetrates the right wall of explosion -proof shell (1) and is passed through with the inside of explosion -proof shell (1), the lower wall of explosion -proof shell (1) is fixedly connected with moisture -proof pad (20) and bottom plate (21) from top to bottom in proper order.

2. The damp-proof and dehumidifying mine explosion-proof transformer according to claim 1, characterized in that: The first pipeline (5), third pipeline (7), fourth pipeline (8) and sixth pipeline (10) are provided with humidity detection structures outside the walls for detecting the humidity of the air in the pipes, the third pipeline (7), second pipeline (6), fifth pipeline (9), sixth pipeline (10), seventh pipeline (24), eighth pipeline (25), ninth pipeline (27) and tenth pipeline (28) are provided with valve structures outside the walls for controlling the on-off of the pipes, the first dehumidification box (2) and second dehumidification box (3) are provided with moisture absorption structures inside for absorbing moisture, the first dehumidification box (2) and second dehumidification box (3) are provided with heating structures inside above the moisture absorption structures for helping the regeneration of the moisture absorption structures, and the first dehumidification box (2) and second dehumidification box (3) are provided with air supply structures inside below the moisture absorption structures.

3. The damp-proof and dehumidifying mine explosion-proof transformer according to claim 2, characterized in that: The humidity detection structures include four groups of humidity sensors (29), which are arranged outside the walls of the first pipeline (5), third pipeline (7), fourth pipeline (8) and sixth pipeline (10).

4. The damp-proof and dehumidifying mine explosion-proof transformer according to claim 3, characterized in that: The valve structure comprises eight groups of explosion-proof pipeline valves (11), and the eight groups of explosion-proof pipeline valves (11) are arranged on the outer walls of the third pipeline (7), the second pipeline (6), the fifth pipeline (9), the sixth pipeline (10), the seventh pipeline (24), the eighth pipeline (25), the ninth pipeline (27) and the tenth pipeline (28) respectively.

5. The damp-proof and dehumidifying mine explosion-proof transformer according to claim 4, characterized in that: The moisture absorption structure comprises a plurality of groups of dehumidification boxes (17), and the plurality of groups of dehumidification boxes (17) are arranged in the first dehumidification box (2) and the second dehumidification box (3) respectively. The first dehumidification box (2) and the second dehumidification box (3) are provided with fixing frames (16) inside, the dehumidification boxes (17) are in sliding connection with the inner side walls of the fixing frames (16), the dehumidification boxes (17) are provided with storage cavities inside, the upper and lower openings of the storage cavities are provided with fixed nets (18), and a plurality of groups of moisture absorption particles (19) are filled in the storage cavities and between the two groups of fixed nets (18). The moisture absorption particles (19) are heat-regeneratable moisture absorption silica gel particles.

6. A moisture-proof and dehumidifying mine explosion-proof transformer according to claim 5, characterized in that: The heating structure comprises two heating devices, and the two heating devices are arranged in the first dehumidification box (2) and the second dehumidification box (3) respectively. The heating device is composed of a plurality of groups of explosion-proof PTC heating pipes (15), and the plurality of groups of explosion-proof PTC heating pipes (15) are distributed in multiple rows and multiple columns. Each row of explosion-proof PTC heating pipes (15) is distributed in a staggered manner with the adjacent row of explosion-proof PTC heating pipes (15).

7. A moisture-proof and dehumidifying mine explosion-proof transformer according to claim 6, characterized in that: The air supply structure comprises two groups of explosion-proof fans (22), and the two groups of explosion-proof fans (22) are fixedly connected in the first dehumidification box (2) and the second dehumidification box (3) respectively. The two groups of explosion-proof fans (22) are both bidirectional axial flow fans.

8. The damp-proof and dehumidifying mine explosion-proof transformer according to claim 7, characterized in that: The inner lower walls of the first dehumidification box (2) and the second dehumidification box (3) are fixedly connected with water collecting covers (14), the water collecting covers (14) are in the shape of an inverted cone with a large upper opening and a small lower opening, one end of the third pipeline (7) facing the lower wall of the first dehumidification box (2) penetrates through the lower wall of the first dehumidification box (2) and is connected with the lower opening of the water collecting cover (14) in the first dehumidification box (2), and one end of the sixth pipeline (10) facing the lower wall of the second dehumidification box (3) penetrates through the lower wall of the second dehumidification box (3) and is connected with the lower opening of the water collecting cover (14) in the second dehumidification box (3).

9. The damp-proof and dehumidifying mine explosion-proof transformer according to claim 8, characterized in that: The second pipeline (6) penetrates the lower wall of the first dehumidification box (2), the inner wall of the water collecting cover (14) in turn and extends to above the water collecting cover (14) from one end of the lower wall of the first dehumidification box (2), the fifth pipeline (9) penetrates the lower wall of the second dehumidification box (3), the inner wall of the water collecting cover (14) in turn and extends to above the water collecting cover (14) from one end of the lower wall of the second dehumidification box (3), the outer wall of the end of the second pipeline (6) extending into the first dehumidification box (2) and the outer wall of the end of the fifth pipeline (9) extending into the second dehumidification box (3) are provided with air vents (13), the end of the second pipeline (6) extending into the first dehumidification box (2) and the end of the fifth pipeline (9) extending into the second dehumidification box (3) are fixedly connected with waterproof caps (12) for preventing water from entering, the waterproof cap (12) is in a closed upper end and open lower end shape, the outer diameters of the second pipeline (6) and the fifth pipeline (9) are smaller than the inner diameter of the waterproof cap (12).

10. The damp-proof and dehumidifying mine explosion-proof transformer according to claim 9, characterized in that: The opposite sides of the first dehumidification box (2) and the second dehumidification box (3) are respectively provided with a group of maintenance doors (4), the first dehumidification box (2) and the second dehumidification box (3) are maintained by opening the maintenance door (4).

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